Ken Weatherwax, who played the child character Pugsley on The Addams Family television series in the 1960s, has died. He was 59.

Weatherwax died of a heart attack at his Box Canyon, California, home over the weekend, said Joey D Vieira, his half-brother. Weatherwax’s body was found on Sunday.

Pugsley, the son of Gomez and Morticia, was a member of the family of macabre oddballs in the television series, which aired on ABC from 1964 to 1966 with its familiar, finger-snapping theme song.

He stayed in show business after he grew up, although on the other side of the camera.

Weatherwax worked as a grip on the sets of several Hollywood productions, said Vieira, a former actor himself who played the character Porky in the original Lassie series.

Weatherwax retired a few years ago for medical reasons, Vieira said.